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Experiment teaching or research can't be carried out on schedule at some schools and research institutions due to the lack of sufficient experiment instruments or other reasons. Virtual experiment technology could resolve the problem effectively, and would play an increasingly prominent role in modern teaching. This project designed and accomplished a series of aerodynamics virtual experiment software...
In order to model the gearbox and global wind turbine system with higher accuracy in short time, this paper focuses on the methods of multi-body dynamic modeling and wind turbine dynamic simulation on the platform of S4WT. By introducing the multibody system and super element approach, a steady-state response is simulated on one 1.5MW gearbox. Through calling S4WT parametric model, a dynamic response...
Combined with the one-dimensional isentropic flow theory, method of CFD is used to simulate the whole flow field of a certain convergent-divergent nozzle under the typical operation. The paper describes the gird generation, boundary conditions determination, flow field initialization as well as RNG k-e turbulence model application, and analyzes the nozzle aerodynamic characteristics. Studies have...
In order to study the dynamic characteristics of centrifuge facility-vibration shaker system, In the establishment of centrifuge facility-vibration shaker system multi-body dynamic model based on virtual mocking technology, the virtual dynamic model of the entire centrifuge facility-vibration shaker system more close to reality is built up by the transmission of finite element of flexible centrifuge...
This paper presents dynamic modeling for cross-spring pivots, based on the Beam Constraint Model (BCM) and Lagrangian method. The effect of vertical force is included in this model. The first natural frequency of the cross-spring pivot under vertical force is derived. The effects on the first natural frequency imposed by manufacturing errors are studied. The model predictions of the first natural...
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